trolling

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  actions:{
  	save(){
    	const name = this.get('name');
      const _name = this.get('_name');
      if(name){
        if(!_name){
      		this.set('_name',this.get('name'));
        	this.set('message', '¿En serio? ¿no se te ocurre nada mejor?');
        } else {
          if(_name === name){
              this.set('message', 'Vale... no hace falta ponerse agresivo');
          } else {
                      this.set('_name',this.get('name'));
          this.set('message', 'Pfff... ¿tan poca personalidad tienes que cambias tu nombre sólo porque a otros no les gusta?');
          }
        }
      } else {
      	this.set('message', '¿Qué parte de \"Introduce tu nombre\" no has entendido?');
      }       
    }
  }
});

templates.application.hbs

<h1>Introduce tu nombre:</h1>
<br>
<input type="text" value={{name}} onkeyup={{action (mut name) value="target.value"}}>
<button {{action "save"}}>Continuar</button>
<br><br>
{{message}}

twiddle.json

{
  "version": "0.7.2",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.4.4/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.4.3/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.4.4/ember-template-compiler.js"
  }
}